I am 44, still having regular periods about every 30-32 days, albeit heavy ones. For the last maybe 4 years, I have experienced bouts of rapid heart rate, accompanied by feelings of heat, very mild perspiration, and an awful feeling of panic. These bouts last no longer than a few minutes, but are terrifying. They happen mostly at night, when I am sleeping. They have been diagnosed as panic attacks, but I cannot imagine feeling relaxed, or being dead asleep, and it being a panic attack so sudden like that. I get a "feeling" that comes outta nowhere, and then boom, my heart is racing and I'm freaking out.I have had a full work-up by a cardiologist (EKG, echo, stress test, holter monitor) and several full blood work-ups (thyroid etc), and the results pointed only to PVCS and anemia due to heavy periods (which has been corrected with vitamins). Both my GP and cardiologist seem unconcerned about it, so I know I am not in danger. Yet when it happens, I feel awful and it really ruins the rest of my day as I worry about whether something may be wrong, and it is being missed. Is this just part of perimenopause, could it be panic attacks and hot flashes at the same time, or I am I just going crazy???